ThornSin

ThornSin is an Adult Action Roguelike game developed with Unity by ScarletPaper. Designed to be both engaging and erotic, the game blends real-time combat with fully animated H-scenes across procedurally generated dungeons.

Story

The town of Magheim has been destroyed by an unknown force. Sister Inesa sets out into the ruins to uncover the cause of the disaster. She carries a kind and steadfast heart — yet deep within her lies something unknown, even to herself. Searching for both faith and identity, she steps into a world overrun by demons and sins.

Features

Real-time combat with fully animated H-scenes
Procedurally generated dungeons for endless replayability
Ever-expanding roster of artifacts and items
Achievements that unlock new items and enemies
Supports English, Japanese, Chinese (Traditional), and Korean
Keyboard and gamepad (joystick) support

Version 0.7.5 — What's New

New Enemies: Four new enemy types added, each with dedicated H-scenes
Merchant Event CG: The fifth-stage merchant trading event is now fully implemented with CG
Chapter 5 — Dungeon: A new dungeon area filled with highly distorted enemies and cunning traps; the Masked Maid serves as the Chapter 5 boss
New Event CGs & Opening Scene: Five new event scenes added to enrich the story; a new opening scene deepens Freya's backstory
Chamber of Secrets: A new exploration room type found in Chapters 1, 3, and 4 — each contains unique event scenes with lore clues (available in New Game+ only)
New Room Designs: Numerous new room layouts and decorations added across all chapters
Improved Map Generation: Adjusted room generation logic for more natural and engaging map structures
Expanded Mid-Layer Events: New story events trigger during chapter traversal to enhance world depth
New Guardians: Three new guardians with unique skills and gimmicks requiring fresh strategies
Optimized Attack Effects: Fixed hitbox discrepancies and improved impact feedback

Additional Information

ThornSin is actively in development. Follow ScarletPaper on Patreon or Ci-en for the latest updates.

ThornSin - Update Log / Devlog